May degree days

Background Information for this page
Return to Apple list for Westhampton MA
Weather data for Westhampton MA.  Forecast values begin September 18, 2018
Estimated degree day accumulations are from March 1. Observational data began April 12. 
The influence of warmer or colder than average winter are not accounted for in the accumulations.
Date Observed & Forecast Degree Days base 43F
for this day
Cumulative Observed & Forecast DD base 43F
(Climatic average in parentheses)
Number of CALENDAR days ahead (red) or behind (blue) climatic average DD43 since
April 12
Observed & Forecast Degree days base 50F
for this day
 Cumulative Observed & Forecast DD base 50
(Climatic average in parentheses)
Number of CALENDAR days ahead (red) or behind (blue) climatic average DD50 since
April 12
May 1 13 138  (105) +4 8 55  (29) +7
May 2 27 166  (112) +5 20 76  (32) +8
May 3 30 196  (119) +6 23 99  (36) +8
May 4 29 225  (127) +4 22 120  (39) +8
May 5 21 245  (135) +5 14 134  (43) +8
May 6 14 259  (143) +5 7 141  (47) +9
May 7 16 275  (152) +6 9 150  (51) +7
May 8 16 292  (160) +7 10 161  (55) +8
May 9 19 311  (170) +7 13 174  (60) +8
May 10 17 328  (179) +8 10 184  (65) +9
May 11 16 344  (189) +9 9 193  (70) +10
May 12 5 350  (199) +9 0 193  (75) +11
May 13 9 359  (209) +10 4 197  (80) +11
May 14 17 376  (220) +11 10 207  (86) +12
May 15 21 397  (231) +11 14 221  (92) +13
May 16 16 413  (242) +12 9 230  (98) +14
May 17 21 434  (254) +12 14 244  (105) +14
May 18 17 450  (265) +12 10 253  (111) +15
May 19 8 458  (277) +12 2 255  (118) +15
May 20 22 481  (290) +13 15 271  (125) +16
May 21 20 501  (302) +13 13 284  (132) +16
May 22 14 515  (315) +13 7 291  (140) +15
May 23 24 539  (329) +13 17 309  (147) +16
May 24 22 561  (342) +13 15 323  (155) +16
May 25 27 588  (356) +13 20 343  (163) +17
May 26 32 620  (370) +13 25 368  (172) +18
May 27 15 634  (385) +13 8 375  (180) +17
May 28 15 649  (400) +13 8 383  (189) +17
May 29 29 678  (415) +13 22 405  (198) +16
May 30 26 703  (430) +14 19 424  (208) +16
May 31 24 727  (446) +14 17 441  (217) +17